Platen for presses



A. C. V. MALM PLATEN FOR PRESSES Sept. 1, 1925.

Original Filed Dec. 2 Sheets-Sheet. 1

W MM 4 M M a aw m Reissued Sept. 1, 1925.

UNITED srArss Re. 16,155} .e r151151.71 OFFICE.

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original as. iiass seyaea To all whom itm ag concemt: Beit known that I, AXEL G; V MALM,' a citizen 'of' the United States, residing at Lansdowne', county of Delaware, State of Pennsylvania, have invented anew and useful Platen for Presses, of which the fol' lowing is a specification. H v

This invention relates to platens for presses, such, for example,- as the-power presses commonly employed for curing'r uh ber, bakelite and the like. One object of the invention is to "provide a platen of'this I kind, the surface of whichmay be quickly steam to the interior thereof.

and 'uniformly heated by the application of Another object of the inventioni's'to vide such a device which will be so constructed that a cooling-medium, such as water, may be appliedthereto immediatelyia fter the steam has been cut 01f, Witho'utdistorting the platen or cau'sing the sameeto leak or otherwise injuring the same. Other objects of the invention will appear as'the device is described in detail. U t

p v In the accompanying. drawings Figure 1 is a side elevation of a press, showing my invention applied thereto; Fig.12i's ajjtrjanlsverse sectional view of a portion offsuc'h a press taken on the, line 2' 2o'f -;Fi'g 1"; Fig. 3 is a plan view of" a platen embodying my invention; Fig. 4 is a transverse see- I tional view of'the same; 5 is a plan view of the inner face of'one 'of'the sections of such a platen; Fig-'Gisan edge view of the section of Fig. 5; Fig. 7 transverse sectional View taken "on the line 77 of Fig. 5; Fig. 8 is a plan view of the inner surface of the other sectionof the platen; and Fig.9 is a transverse see tional view taken on the line 99 of" the section of Fig. 8.

In these drawings embodiment of my invention, and have shown the same as applied to a pow 'er pr e'ss of a 'well known construction but it will be I.

im de'rstood that the invention may be constructed in various ways and may takeva'rious forms, either for the purpose-of acconimodating it to p'resse's of different kinds or for other purposes.

. Pres r wn 1 and a top plate 2; which-is connected-to the base by means; of vertical rods 3.: Mounted on the base 1 is a ram comprising I have illustrated one comprises base Application for a head 4 and a plunger 5 mounted in. a

cylinder 6 in the base 1, which may be operated by-the application of steam? or other" fluidl Inter-posed between the ram and 'thetop platefl'are a series ofplatens orpr essureplates 7 which are mounted for vertical movement relativelyoneto the other and to the topplate so that when the material to b e' cured has been placed between the platens, and betweenthe upper platen 'and'the 'tol'o-p'late' andthe lower platen and the plun'gerfthe upward movement of the rain will cause the severalplatens to be "moved upwardly, one'toward the other, and

towardthe top plate. The platens may be supported in-"any 'suitable manner but in thepr esent "construction I have provided each platen with a series of lugs, or ears,

8fther'e being preferably one er these ears at each co'rne'r'of the-platen, which is here shown as square. Depending from the top plate and rigidly secured thereto near the respective corners thereof are four rods, or hangersgfi), each "of which: extends through an opening in the adjacent lu'g"8, in the uppermostplaten. Secured to each lug of this uppermost platen; preferably by mounting the same in another opening therein; isj a hanger-, or ro'd; 10', which extendsthrongh an openin in the correspondin g'lug"8"of"the next lower platen. The lugs of tliis'next' lower plate'nare also-pro- 'vided withxh'an'gers, orrods, 1 1 which exthrough opehings "inthe lugs 8 of the lowermost platen, therebeii1'g in. the press 'h'er'e shown bu'tTthre'e platens; It will be apparent that each platenis free to move "verticall o nits hangers and that the hang- 'ei'stheinselve'swill move vertically with the "pla tel'lis to which "they" are-secured;

Eachplat'en is provided with a chamber within which steam or other fluid may circulateand'thischamber is so constructed and arranged that the steam will come in contact with relatively large portions" of the upper and lowerwalls'of the platen.- It is, of course, necessary that the platen shall, be of a very sti fmg" durable character and I tate the manufacture thereof I prefer to form'thesamein two sections which may be placed face to face and rigidly secured one 'to the "other.. The t-Wo sections are so "arranged with relation one to the other tlfat prefer to make thesame steel. To faciliportions of their inner surfaces will be spaced apart, and are tightly connected at their edges, thus forming between the sections a chamber to receive a fluid, such as steam for curing or water for cooling. The sections may have said portions of their adjacent faces spaced apart in any suitable manner to form the chamber, as, for example, by providing one or both of the sections with a recess or channel in the inner face thereof, and the chamber may, if desired, comprise a plurality of connected parts, thus forming a relatively long channel through which the fluid may circulate. In the construction here illustrated each section is provided in its face with channels, the channelsof the'two sections being so arranged that they will be in communication one with the other and that the greater portions of the inner surfaces of both sections will be exposed directly to the steam in the channels of one, or both, of the sections, and further, the arrangement is such that those portions of the surfaces which are not exposed directly to the steam will be relatively small and will be surrounded by portions Which are in contact with the steam. The platen may be of any suitable shape and the sections may taken various forms. In the present construction the platen is substantially squareand the sections are fiat. I The two sections in the present instance are very similar in their construction and the lower section which is indicated by the reference numeral 12, carries the ears, 8, while the upper section, 13, does not have ears. As has been stated, the channels in the sections may take various forms, but in the present instance I have shown each section as having a channel 14 extending completely about the same near its outer edges. A seriesof substantially parallel channels 15 extend transversely to the section and communicate at their ends with the surrounding channel 14. When the two sections are assembled to form the platen the channels 15 of the one section extend transversely to the channels 15 of the other section so that the ribs 16 which separate the channels 15, will intersect and rest one upon the other. Because of the intersecting arrangement of the channels it will be apparent that the steam, or other fluid which may be caused to circulate therein, will come tions of both sections and with the inner surfaces of the ribs where they intersect the channels. The only portions of the surfaces which do not come in direct contact with the steam are those portions of the ribs which intersect and rest one upon the other, and'theseportions are surrounded by the channels. As a result of this construction the surfaces of the platen are very quickly and uniformly heated. The two secedges together.

tions are rigidly secured one to the other preferably by means of a series of screws 17, which extend through the ribs at their points of intersection, the ribs being preferably enlarged, as shown at 18, to provide ample support for the screws. The sections are further secured one to the other in such a manner as to form fluid tight joints surrounding the chamber and this is preferably accomplished by welding their adjacent This welded joint is not only very strong and durable but it forms a perfect fluid tight connection between the two sections. Consequently, the platen is of a very strong, durable construction and will not be injuriously affected by the injection of a cooling medium into the channels immediately after the steam is cut OE and while the platen is still hot. The manner of connecting the two sections, as well as the construction of the two sections, is such that there will be little or no tendency to warp or become distorted by the sudden changes in temperature and the welded joints at the edges of the sections will not be liable to break and thus cause leakage. A further advantage of the welded joints is that they do away with all packing between the two sections. Not only is the platen as here constructed highly eflicient and of a strong, durable character, but it can be readily and cheaply manufactured as the sections are each cast, or otherwise formed, in one piece and very little machine work is required.

The platen may be provided with an inlet and an outlet of any suitable character and arrangement. In the present instance I have shown two ports, 19, leading through the edge of the platen and communicating with the outer channel 14. In the present arrangement the ports are both arranged in the same edge of the platen and are adapted to have steam pipes connected therewith. Preferably the outlet of one platen is connected with the inlet of the other so that the steam passes in series through the several plates. Obviously the top plate and the head 4 of the ram may be constructed in a similar manner and may, if desired, be connected in series with the platens.

I believe myself to be the first to construct a platen of this kind of two metal plates connected one to the other and having a directly in contact with the channeled porchamber between them, and while I have shown and described one embodiment of my invention, I wish it to be understood that I do not desire to be limited to the details thereof as various modifications may occur to a person skilled in the art.

Having now fully described my invention what I claim as new and desire to secure by "Letters Patent, is

1. A device of the character described, comprising two sections arranged face to face, connected one to the other and each having a plurality of connected channels in its inner face, and having an inlet and an outlet leading respectively to and from said channels.

2. A device of the character described, comprising two sections arranged face to face, connected one to the other and each having a plurality of connected channels in its inner face, the channels of one section being arranged to communicate with the channels of the other section, and having an inlet and an outlet leading respectively to and from said channels.

3. A device of the character described comprising two sections placed face to face, each section having substantially parallel channels and the channels of the two sections extending transversely one to the other, said device also having inlet and outlet ports leading to and from said channels, and said sections being connected one to the other to form steam tight joints at their edges.

4. A device of the character described comprising two sections placed face to face, rigidly connected one to the other and having channels in their adjacent faces, the

channels in one section being arranged to intersect the channels in the other section, said device also having inlet and outlet ports leading to and from said channels.

5. A device of the character described comprising two sections placed face to face, rigidly secured one to the other and each having in its inner face a channel extending about the same near the edges thereof and other channels extending across the same and communicating with the first mentioned channel, the last mentioned channels of one section intersecting the corresponding channels of the other section, and inlet and outlet ports leading to and from said channels.

6. A device of the character described comprising two flat sections of corresponding shape placed face to face and each having in its inner face a channel extending entirely about the same near the outer edge thereof and other channels communicating at their ends with the first mentioned channel, the several channels of the one section being arranged to communicate with the corresponding channels of the other section,

and inlet and outlet ports leading to and from said channels, said sections being rigidly connected one to the other to form steam tight joints at their edges.

7. A device of the character described comprising two sections placed face to face and having channels in their adjacent faces so arranged that the channels in one section will intersect the channels in the other section, and having inlet and outlet ports leading to and from said channels, said sections being welded one to the other at their edges, and fastening devices connecting intermediate portions of said sections one to the other.

8. A device of the character described comprising two sections placed face to face and each having in its inner face a channel extending about the same near the edges thereof, and substantially parallel channels communicating at their opposite ends with the first mentioned channel, the last mentioned channels of the one section extending transversely to the channels of the other, and inlet and outlet ports leading to and from said channels, said sections being welded one to the other along their edges.

9. A device of the character described comprising two sections placed face to face,

each section having in its inner face a channel extending about the same near the edge thereof, and having transverse channels communicating at their ends with the first mentioned channel and separated by ribs and the ribs of the two sections intersecting and resting one upon the other, said sections being connected one to the other to form steam tight joints at their edges.

10. A device of the character described comprising two sections placed face to face, each section having in its inner face a channel extending about the same near the edge thereof, and having transverse channels communicating at their ends with the first mentioned channel and separated by ribs, the ribs of the two sections intersecting and resting one upon the other, and fastening devices extending through intersecting portions of said ribs.

In testimony whereof I affix my signature hereto.

AXEL o. v. MALM. 

